100 Pack 608-2RS Skateboard Bearing, Rolling Bearings, 8x22x7mm 608rs Bearing

They come in cosmaline i do believe to keep off rust. Out of 20 I found 2 didnt spin right. I clean em woth gasoline and wash n dry with dawn and relube.I notice on my skates I can run a set for about 6 months before relubing.

Im sure these will work to support light to medium weight loads and you cant beat the price.

No nylon cage contrary to description. Metal cage. Non removable type.. Seals (shields?) are black, not red (not that it matters that much) but made of thin, flimsy plastic material. All the bearing shields Ive seen have been made of some type of thin metal alloy material, with a rubberized coating on one side. Not these. These flex a lot and dont seem too precise a fit, compared to the other type. The bearings had kind of a scraping quality to them, not smooth or particularly quiet. I had heard that its better to buy cheap bearings because the ABEC rating doesnt matter all that much unless its a very, very high RPM application youre using them for and that if you go for a higher ABEC rating, youre just wasting your money.. But I suspect theres something going on with these bearings that doesnt have to do with the ABEC rating at all. Not sure what it is. But maybe the moral of the story is that you just cant get 100 good quality bearings for $20? Perhaps. * Since originally posting this, Ive come to the conclusion that the problem lies with the metal cages that hold the individual ball bearings in these bearings. Because everything else about them, with the exception of the flimsy black plastic shields that probably arent really contributing to any problems (despite being flimsy) ...everything else about these bearings seems to be fairly similar in quality to other similar bearings that Ive had EXCEPT for these metal cages. They just seem to be made of a very thin metal and also seem quite flimsy and not precise.. and they are important. In fact I noticed that one of the individual ball bearings in one of these cages wasnt even centered properly in its little cup. So I think this is the problem. Which is why they scrape and do not roll smoothly in my opinion

I thought hardening at the very least a requirement for roller bearings. I guess thats what I get for ordering chinese crap. Save your money.

these are the worst bearings ive encountered on amazon as of yet, the price really was too good to be true. they arrived super sticky as if they used sugar water as a lubricant. they also require many pounds of force before they even roll. do your self a favor and do not buy

You get what you pay for. I realize these are only ABEC 1 rated. But, wow are they sloppy. the 8mm hole has a decent amount of variation. turned a shaft to fit the 1st bearing perfectly, the next wouldnt go on, and the next was loose.Once a shaft is fitted to the hole, ALL i tested (gave up after about 20) have more wable than Id expect. IE, spin it on a fixed shaft, and the outside casing doesnt spin even close to true with the inner casing. Some were pushing almost 1/6th inch.

When I first got into 3D printing, I didnt know these things existed. I quickly found, however, that the 608 is the bearing of choice for many 3D-print projects that need rotating parts. I really dont know how long it is going to take me to use all of these (so far Ive only used them in three projects), but I couldnt pass up the quantity price. They fit perfectly in every project that calls for a 608, they turn smoothly -- whats not to like.

I had purchased these to use in various 3D printer guides, but they have way too much friction. Instead of rolling they just sit there as filament passes over them. I tried printing a fidget spinner as well. As I spin the spinner as fast as I can, it comes to a complete stop within a couple of second. I guess you get what you pay for.

Ive owned many bearings over the years, for many purposes. I didnt leave a review sooner ( I ordered these OVER TWO YEARS AGO) because I figured with the absolute abysmal quality, there was no way the listing/store was still even up. You know those things you order, but by the time you go to review the entire seller has disappeared, seemingly overnight? I expected that of these. Out of a set of twenty of them, I found eight which dont exhibit axial tilt while rotating, like the earths axis is tilted and wobbles. Their axial play is easily perceptible, their axial precision (angular wobble off axis) is ABYSMAL (Id say 2.5 degrees on average?) and they make SO. MUCH. NOISE. IF you need a billion bearings with absolutely no requirement for precision or reliability, buy twice as many of these bearings as you think youre going to need. If you need any manner of stability, quietness, precision, reliability, longevity, or any other positive attribute beyond nonzero weight and doesnt crush easily from the side Id suggest you look ANYWHERE else. Ive been angry every single time Ive had to try to find a usable one for a project, for literally two years. NOTE: Im not joking, I can print bearings which run more smoothly and silently than these, out of PLA, AND they track straighter. No, theyre not nearly as strong, and will crush readily, but these are worse for most of my applications than PLA printed bearings.

Nice product.